Ja'far bin Abi Thawr narrates that it is narrated from Sayyiduna Jabir bin Samurah (may Allah be pleased with him): The Messenger of Allah (peace and blessings be upon him) was asked whether one may pray in the resting places of camels. He said: "No." It was said: Must ablution be performed after eating their meat? He said: "Yes." It was said: Then may one pray in the pens of sheep? He said: "Yes." It was said: Must ablution be performed after eating their meat? He said: "No."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1850